ATLAS silicon microstrip semiconductor tracker (SCT)

Silicon microstrip semiconductor tracking system (SCT) will be in operation in the ATLAS detector in the Large Hadron Collider (LHC) at CERN. Challenging issues in the SCT are the radiation tolerance to the fluence of 2*10/sup 14/ 1-MeV-neutron-equivalent particles/cm/sup 2/ at the designed luminosity of 1*10/sup 34/ cm/sup -2//s of the proton-proton collisions and the speed of the electronics to identify the crossing bunches at 25 ns. The developments and the status of the SCT are presented from the point of view of these issues. Series production of the SCT will start in the year 2001 and the SCT will be installed into the ATLAS detector during 2003-2004. (7 refs).